The National Weather Service has discontinued a tropical storm warning for Louisiana after forecast models indicated that the state is under less of a threat from Tropical Storm Debby than initially thought.

Parts of Alabama and Florida remain under a tropical storm warning, however. Storm paths are generally hard to predict days in advance, and forecasters say they've been comparing several models to compile the official forecast. As of late Sunday, though, they believe the storm was less likely to make a westward turn toward Louisiana.

Forecasters dropped storm warnings for southeastern Louisiana Sunday afternoon and said the threat from Tropical Storm Debby had decreased.

National Hurricane Center forecasters backed away from an earlier projection that Debby might strike southeast Louisiana as a Category 1 hurricane. Instead they said they didn't expect it to turn west from its northward path that has it aimed at Florida and Alabama.